Abstract
The solubility and physicochemical properties of resveratrol in peanut oil were systematically studied following ultrasonic and magnetic stirring-assisted dissolution. The highest resveratrol solubility in peanut oil observed was 95.91%. The optimal dissolution process was determined to be the addition of 183.00 mg/kg resveratrol, a magnetic temperature of 40.00℃, and a magnetic duration of 3.50 h, which yielded a resveratrol content of 175.51 mg/kg oil. Under this standardized process, the oil composition remained unchanged. Resveratrol promoted the conversion of saturated triglycerides into unsaturated triglycerides, increased the linolenic acid content, and did not facilitate the formation of trans fatty acids. In addition, resveratrol preservedthe lightcolor, decreased the peroxide and acid values by 30%, prolonged the shelf life by more than 2 folds, and improved the thermal stability. In this sense, peanut oil with resveratrol can serve as anti-isomerism and antioxidant additive.
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